--- /dev/null
+/*
+ * Copyright (C) 2011 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+#include <errno.h>
+#include <assert.h>
+#include <byteswap.h>
+#include <ipxe/pci.h>
+#include <ipxe/io.h>
+#include <ipxe/malloc.h>
+#include <ipxe/profile.h>
+#include <ipxe/iobuf.h>
+#include <ipxe/netdevice.h>
+#include <ipxe/if_ether.h>
+#include <ipxe/ethernet.h>
+#include "vmxnet3.h"
+
+/**
+ * @file
+ *
+ * VMware vmxnet3 virtual NIC driver
+ *
+ */
+
+/** VM command profiler */
+static struct profiler vmxnet3_vm_command_profiler __profiler =
+ { .name = "vmxnet3.vm_command" };
+
+/** VM transmit profiler */
+static struct profiler vmxnet3_vm_tx_profiler __profiler =
+ { .name = "vmxnet3.vm_tx" };
+
+/** VM receive refill profiler */
+static struct profiler vmxnet3_vm_refill_profiler __profiler =
+ { .name = "vmxnet3.vm_refill" };
+
+/** VM event profiler */
+static struct profiler vmxnet3_vm_event_profiler __profiler =
+ { .name = "vmxnet3.vm_event" };
+
+/**
+ * Issue command
+ *
+ * @v vmxnet vmxnet3 NIC
+ * @v command Command to issue
+ * @ret result Command result
+ */
+static inline uint32_t vmxnet3_command ( struct vmxnet3_nic *vmxnet,
+ uint32_t command ) {
+ uint32_t result;
+
+ /* Issue command */
+ profile_start ( &vmxnet3_vm_command_profiler );
+ writel ( command, ( vmxnet->vd + VMXNET3_VD_CMD ) );
+ result = readl ( vmxnet->vd + VMXNET3_VD_CMD );
+ profile_stop ( &vmxnet3_vm_command_profiler );
+ profile_exclude ( &vmxnet3_vm_command_profiler );
+
+ return result;
+}
+
+/**
+ * Transmit packet
+ *
+ * @v netdev Network device
+ * @v iobuf I/O buffer
+ * @ret rc Return status code
+ */
+static int vmxnet3_transmit ( struct net_device *netdev,
+ struct io_buffer *iobuf ) {
+ struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
+ struct vmxnet3_tx_desc *tx_desc;
+ unsigned int desc_idx;
+ unsigned int generation;
+
+ /* Check that we have a free transmit descriptor */
+ desc_idx = ( vmxnet->count.tx_prod % VMXNET3_NUM_TX_DESC );
+ generation = ( ( vmxnet->count.tx_prod & VMXNET3_NUM_TX_DESC ) ?
+ 0 : cpu_to_le32 ( VMXNET3_TXF_GEN ) );
+ if ( vmxnet->tx_iobuf[desc_idx] ) {
+ DBGC ( vmxnet, "VMXNET3 %p out of transmit descriptors\n",
+ vmxnet );
+ return -ENOBUFS;
+ }
+
+ /* Increment producer counter */
+ vmxnet->count.tx_prod++;
+
+ /* Store I/O buffer for later completion */
+ vmxnet->tx_iobuf[desc_idx] = iobuf;
+
+ /* Populate transmit descriptor */
+ tx_desc = &vmxnet->dma->tx_desc[desc_idx];
+ tx_desc->address = cpu_to_le64 ( virt_to_bus ( iobuf->data ) );
+ tx_desc->flags[0] = ( generation | cpu_to_le32 ( iob_len ( iobuf ) ) );
+ tx_desc->flags[1] = cpu_to_le32 ( VMXNET3_TXF_CQ | VMXNET3_TXF_EOP );
+
+ /* Hand over descriptor to NIC */
+ wmb();
+ profile_start ( &vmxnet3_vm_tx_profiler );
+ writel ( ( vmxnet->count.tx_prod % VMXNET3_NUM_TX_DESC ),
+ ( vmxnet->pt + VMXNET3_PT_TXPROD ) );
+ profile_stop ( &vmxnet3_vm_tx_profiler );
+ profile_exclude ( &vmxnet3_vm_tx_profiler );
+
+ return 0;
+}
+
+/**
+ * Poll for completed transmissions
+ *
+ * @v netdev Network device
+ */
+static void vmxnet3_poll_tx ( struct net_device *netdev ) {
+ struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
+ struct vmxnet3_tx_comp *tx_comp;
+ struct io_buffer *iobuf;
+ unsigned int comp_idx;
+ unsigned int desc_idx;
+ unsigned int generation;
+
+ while ( 1 ) {
+
+ /* Look for completed descriptors */
+ comp_idx = ( vmxnet->count.tx_cons % VMXNET3_NUM_TX_COMP );
+ generation = ( ( vmxnet->count.tx_cons & VMXNET3_NUM_TX_COMP ) ?
+ 0 : cpu_to_le32 ( VMXNET3_TXCF_GEN ) );
+ tx_comp = &vmxnet->dma->tx_comp[comp_idx];
+ if ( generation != ( tx_comp->flags &
+ cpu_to_le32 ( VMXNET3_TXCF_GEN ) ) ) {
+ break;
+ }
+
+ /* Increment consumer counter */
+ vmxnet->count.tx_cons++;
+
+ /* Locate corresponding transmit descriptor */
+ desc_idx = ( le32_to_cpu ( tx_comp->index ) %
+ VMXNET3_NUM_TX_DESC );
+ iobuf = vmxnet->tx_iobuf[desc_idx];
+ if ( ! iobuf ) {
+ DBGC ( vmxnet, "VMXNET3 %p completed on empty transmit "
+ "buffer %#x/%#x\n", vmxnet, comp_idx, desc_idx );
+ netdev_tx_err ( netdev, NULL, -ENOTTY );
+ continue;
+ }
+
+ /* Remove I/O buffer from transmit queue */
+ vmxnet->tx_iobuf[desc_idx] = NULL;
+
+ /* Report transmission completion to network layer */
+ DBGC2 ( vmxnet, "VMXNET3 %p completed TX %#x/%#x (len %#zx)\n",
+ vmxnet, comp_idx, desc_idx, iob_len ( iobuf ) );
+ netdev_tx_complete ( netdev, iobuf );
+ }
+}
+
+/**
+ * Flush any uncompleted transmit buffers
+ *
+ * @v netdev Network device
+ */
+static void vmxnet3_flush_tx ( struct net_device *netdev ) {
+ struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
+ unsigned int i;
+
+ for ( i = 0 ; i < VMXNET3_NUM_TX_DESC ; i++ ) {
+ if ( vmxnet->tx_iobuf[i] ) {
+ netdev_tx_complete_err ( netdev, vmxnet->tx_iobuf[i],
+ -ECANCELED );
+ vmxnet->tx_iobuf[i] = NULL;
+ }
+ }
+}
+
+/**
+ * Refill receive ring
+ *
+ * @v netdev Network device
+ */
+static void vmxnet3_refill_rx ( struct net_device *netdev ) {
+ struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
+ struct vmxnet3_rx_desc *rx_desc;
+ struct io_buffer *iobuf;
+ unsigned int orig_rx_prod = vmxnet->count.rx_prod;
+ unsigned int desc_idx;
+ unsigned int generation;
+
+ /* Fill receive ring to specified fill level */
+ while ( vmxnet->count.rx_fill < VMXNET3_RX_FILL ) {
+
+ /* Locate receive descriptor */
+ desc_idx = ( vmxnet->count.rx_prod % VMXNET3_NUM_RX_DESC );
+ generation = ( ( vmxnet->count.rx_prod & VMXNET3_NUM_RX_DESC ) ?
+ 0 : cpu_to_le32 ( VMXNET3_RXF_GEN ) );
+ assert ( vmxnet->rx_iobuf[desc_idx] == NULL );
+
+ /* Allocate I/O buffer */
+ iobuf = alloc_iob ( VMXNET3_MTU + NET_IP_ALIGN );
+ if ( ! iobuf ) {
+ /* Non-fatal low memory condition */
+ break;
+ }
+ iob_reserve ( iobuf, NET_IP_ALIGN );
+
+ /* Increment producer counter and fill level */
+ vmxnet->count.rx_prod++;
+ vmxnet->count.rx_fill++;
+
+ /* Store I/O buffer for later completion */
+ vmxnet->rx_iobuf[desc_idx] = iobuf;
+
+ /* Populate receive descriptor */
+ rx_desc = &vmxnet->dma->rx_desc[desc_idx];
+ rx_desc->address = cpu_to_le64 ( virt_to_bus ( iobuf->data ) );
+ rx_desc->flags = ( generation | cpu_to_le32 ( VMXNET3_MTU ) );
+
+ }
+
+ /* Hand over any new descriptors to NIC */
+ if ( vmxnet->count.rx_prod != orig_rx_prod ) {
+ wmb();
+ profile_start ( &vmxnet3_vm_refill_profiler );
+ writel ( ( vmxnet->count.rx_prod % VMXNET3_NUM_RX_DESC ),
+ ( vmxnet->pt + VMXNET3_PT_RXPROD ) );
+ profile_stop ( &vmxnet3_vm_refill_profiler );
+ profile_exclude ( &vmxnet3_vm_refill_profiler );
+ }
+}
+
+/**
+ * Poll for received packets
+ *
+ * @v netdev Network device
+ */
+static void vmxnet3_poll_rx ( struct net_device *netdev ) {
+ struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
+ struct vmxnet3_rx_comp *rx_comp;
+ struct io_buffer *iobuf;
+ unsigned int comp_idx;
+ unsigned int desc_idx;
+ unsigned int generation;
+ size_t len;
+
+ while ( 1 ) {
+
+ /* Look for completed descriptors */
+ comp_idx = ( vmxnet->count.rx_cons % VMXNET3_NUM_RX_COMP );
+ generation = ( ( vmxnet->count.rx_cons & VMXNET3_NUM_RX_COMP ) ?
+ 0 : cpu_to_le32 ( VMXNET3_RXCF_GEN ) );
+ rx_comp = &vmxnet->dma->rx_comp[comp_idx];
+ if ( generation != ( rx_comp->flags &
+ cpu_to_le32 ( VMXNET3_RXCF_GEN ) ) ) {
+ break;
+ }
+
+ /* Increment consumer counter */
+ vmxnet->count.rx_cons++;
+
+ /* Locate corresponding receive descriptor */
+ desc_idx = ( le32_to_cpu ( rx_comp->index ) %
+ VMXNET3_NUM_RX_DESC );
+ iobuf = vmxnet->rx_iobuf[desc_idx];
+ if ( ! iobuf ) {
+ DBGC ( vmxnet, "VMXNET3 %p completed on empty receive "
+ "buffer %#x/%#x\n", vmxnet, comp_idx, desc_idx );
+ netdev_rx_err ( netdev, NULL, -ENOTTY );
+ continue;
+ }
+
+ /* Remove I/O buffer from receive queue */
+ vmxnet->rx_iobuf[desc_idx] = NULL;
+ vmxnet->count.rx_fill--;
+
+ /* Deliver packet to network layer */
+ len = ( le32_to_cpu ( rx_comp->len ) &
+ ( VMXNET3_MAX_PACKET_LEN - 1 ) );
+ DBGC2 ( vmxnet, "VMXNET3 %p completed RX %#x/%#x (len %#zx)\n",
+ vmxnet, comp_idx, desc_idx, len );
+ iob_put ( iobuf, len );
+ netdev_rx ( netdev, iobuf );
+ }
+}
+
+/**
+ * Flush any uncompleted receive buffers
+ *
+ * @v netdev Network device
+ */
+static void vmxnet3_flush_rx ( struct net_device *netdev ) {
+ struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
+ struct io_buffer *iobuf;
+ unsigned int i;
+
+ for ( i = 0 ; i < VMXNET3_NUM_RX_DESC ; i++ ) {
+ if ( ( iobuf = vmxnet->rx_iobuf[i] ) != NULL ) {
+ netdev_rx_err ( netdev, iobuf, -ECANCELED );
+ vmxnet->rx_iobuf[i] = NULL;
+ }
+ }
+}
+
+/**
+ * Check link state
+ *
+ * @v netdev Network device
+ */
+static void vmxnet3_check_link ( struct net_device *netdev ) {
+ struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
+ uint32_t state;
+ int link_up;
+ unsigned int link_speed;
+
+ /* Get link state */
+ state = vmxnet3_command ( vmxnet, VMXNET3_CMD_GET_LINK );
+ link_up = ( state & 1 );
+ link_speed = ( state >> 16 );
+
+ /* Report link state to network device */
+ if ( link_up ) {
+ DBGC ( vmxnet, "VMXNET3 %p link is up at %d Mbps\n",
+ vmxnet, link_speed );
+ netdev_link_up ( netdev );
+ } else {
+ DBGC ( vmxnet, "VMXNET3 %p link is down\n", vmxnet );
+ netdev_link_down ( netdev );
+ }
+}
+
+/**
+ * Poll for events
+ *
+ * @v netdev Network device
+ */
+static void vmxnet3_poll_events ( struct net_device *netdev ) {
+ struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
+ uint32_t events;
+
+ /* Do nothing unless there are events to process */
+ if ( ! vmxnet->dma->shared.ecr )
+ return;
+ events = le32_to_cpu ( vmxnet->dma->shared.ecr );
+
+ /* Acknowledge these events */
+ profile_start ( &vmxnet3_vm_event_profiler );
+ writel ( events, ( vmxnet->vd + VMXNET3_VD_ECR ) );
+ profile_stop ( &vmxnet3_vm_event_profiler );
+ profile_exclude ( &vmxnet3_vm_event_profiler );
+
+ /* Check for link state change */
+ if ( events & VMXNET3_ECR_LINK ) {
+ vmxnet3_check_link ( netdev );
+ events &= ~VMXNET3_ECR_LINK;
+ }
+
+ /* Check for queue errors */
+ if ( events & ( VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR ) ) {
+ vmxnet3_command ( vmxnet, VMXNET3_CMD_GET_QUEUE_STATUS );
+ DBGC ( vmxnet, "VMXNET3 %p queue error status (TX %08x, RX "
+ "%08x)\n", vmxnet,
+ le32_to_cpu ( vmxnet->dma->queues.tx.status.error ),
+ le32_to_cpu ( vmxnet->dma->queues.rx.status.error ) );
+ /* Report errors to allow for visibility via "ifstat" */
+ if ( events & VMXNET3_ECR_TQERR )
+ netdev_tx_err ( netdev, NULL, -EPIPE );
+ if ( events & VMXNET3_ECR_RQERR )
+ netdev_rx_err ( netdev, NULL, -EPIPE );
+ events &= ~( VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR );
+ }
+
+ /* Check for unknown events */
+ if ( events ) {
+ DBGC ( vmxnet, "VMXNET3 %p unknown events %08x\n",
+ vmxnet, events );
+ /* Report error to allow for visibility via "ifstat" */
+ netdev_rx_err ( netdev, NULL, -ENODEV );
+ }
+}
+
+/**
+ * Poll network device
+ *
+ * @v netdev Network device
+ */
+static void vmxnet3_poll ( struct net_device *netdev ) {
+
+ vmxnet3_poll_events ( netdev );
+ vmxnet3_poll_tx ( netdev );
+ vmxnet3_poll_rx ( netdev );
+ vmxnet3_refill_rx ( netdev );
+}
+
+/**
+ * Enable/disable interrupts
+ *
+ * @v netdev Network device
+ * @v enable Interrupts should be enabled
+ */
+static void vmxnet3_irq ( struct net_device *netdev, int enable ) {
+ struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
+
+ DBGC ( vmxnet, "VMXNET3 %p %s IRQ not implemented\n",
+ vmxnet, ( enable ? "enable" : "disable" ) );
+}
+
+/**
+ * Set MAC address
+ *
+ * @v vmxnet vmxnet3 NIC
+ * @v ll_addr Link-layer address to set
+ */
+static void vmxnet3_set_ll_addr ( struct vmxnet3_nic *vmxnet,
+ const void *ll_addr ) {
+ struct {
+ uint32_t low;
+ uint32_t high;
+ } __attribute__ (( packed )) mac;
+
+ memset ( &mac, 0, sizeof ( mac ) );
+ memcpy ( &mac, ll_addr, ETH_ALEN );
+ writel ( cpu_to_le32 ( mac.low ), ( vmxnet->vd + VMXNET3_VD_MACL ) );
+ writel ( cpu_to_le32 ( mac.high ), ( vmxnet->vd + VMXNET3_VD_MACH ) );
+}
+
+/**
+ * Open NIC
+ *
+ * @v netdev Network device
+ * @ret rc Return status code
+ */
+static int vmxnet3_open ( struct net_device *netdev ) {
+ struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
+ struct vmxnet3_shared *shared;
+ struct vmxnet3_queues *queues;
+ uint64_t shared_bus;
+ uint64_t queues_bus;
+ uint32_t status;
+ int rc;
+
+ /* Allocate DMA areas */
+ vmxnet->dma = malloc_dma ( sizeof ( *vmxnet->dma ), VMXNET3_DMA_ALIGN );
+ if ( ! vmxnet->dma ) {
+ DBGC ( vmxnet, "VMXNET3 %p could not allocate DMA area\n",
+ vmxnet );
+ rc = -ENOMEM;
+ goto err_alloc_dma;
+ }
+ memset ( vmxnet->dma, 0, sizeof ( *vmxnet->dma ) );
+
+ /* Populate queue descriptors */
+ queues = &vmxnet->dma->queues;
+ queues->tx.cfg.desc_address =
+ cpu_to_le64 ( virt_to_bus ( &vmxnet->dma->tx_desc ) );
+ queues->tx.cfg.comp_address =
+ cpu_to_le64 ( virt_to_bus ( &vmxnet->dma->tx_comp ) );
+ queues->tx.cfg.num_desc = cpu_to_le32 ( VMXNET3_NUM_TX_DESC );
+ queues->tx.cfg.num_comp = cpu_to_le32 ( VMXNET3_NUM_TX_COMP );
+ queues->rx.cfg.desc_address[0] =
+ cpu_to_le64 ( virt_to_bus ( &vmxnet->dma->rx_desc ) );
+ queues->rx.cfg.comp_address =
+ cpu_to_le64 ( virt_to_bus ( &vmxnet->dma->rx_comp ) );
+ queues->rx.cfg.num_desc[0] = cpu_to_le32 ( VMXNET3_NUM_RX_DESC );
+ queues->rx.cfg.num_comp = cpu_to_le32 ( VMXNET3_NUM_RX_COMP );
+ queues_bus = virt_to_bus ( queues );
+ DBGC ( vmxnet, "VMXNET3 %p queue descriptors at %08llx+%zx\n",
+ vmxnet, queues_bus, sizeof ( *queues ) );
+
+ /* Populate shared area */
+ shared = &vmxnet->dma->shared;
+ shared->magic = cpu_to_le32 ( VMXNET3_SHARED_MAGIC );
+ shared->misc.version = cpu_to_le32 ( VMXNET3_VERSION_MAGIC );
+ shared->misc.version_support = cpu_to_le32 ( VMXNET3_VERSION_SELECT );
+ shared->misc.upt_version_support =
+ cpu_to_le32 ( VMXNET3_UPT_VERSION_SELECT );
+ shared->misc.queue_desc_address = cpu_to_le64 ( queues_bus );
+ shared->misc.queue_desc_len = cpu_to_le32 ( sizeof ( *queues ) );
+ shared->misc.mtu = cpu_to_le32 ( VMXNET3_MTU );
+ shared->misc.num_tx_queues = 1;
+ shared->misc.num_rx_queues = 1;
+ shared->interrupt.num_intrs = 1;
+ shared->interrupt.control = cpu_to_le32 ( VMXNET3_IC_DISABLE_ALL );
+ shared->rx_filter.mode = cpu_to_le32 ( VMXNET3_RXM_UCAST |
+ VMXNET3_RXM_BCAST |
+ VMXNET3_RXM_ALL_MULTI );
+ shared_bus = virt_to_bus ( shared );
+ DBGC ( vmxnet, "VMXNET3 %p shared area at %08llx+%zx\n",
+ vmxnet, shared_bus, sizeof ( *shared ) );
+
+ /* Zero counters */
+ memset ( &vmxnet->count, 0, sizeof ( vmxnet->count ) );
+
+ /* Set MAC address */
+ vmxnet3_set_ll_addr ( vmxnet, &netdev->ll_addr );
+
+ /* Pass shared area to device */
+ writel ( ( shared_bus >> 0 ), ( vmxnet->vd + VMXNET3_VD_DSAL ) );
+ writel ( ( shared_bus >> 32 ), ( vmxnet->vd + VMXNET3_VD_DSAH ) );
+
+ /* Activate device */
+ if ( ( status = vmxnet3_command ( vmxnet,
+ VMXNET3_CMD_ACTIVATE_DEV ) ) != 0 ) {
+ DBGC ( vmxnet, "VMXNET3 %p could not activate (status %#x)\n",
+ vmxnet, status );
+ rc = -EIO;
+ goto err_activate;
+ }
+
+ /* Fill receive ring */
+ vmxnet3_refill_rx ( netdev );
+
+ return 0;
+
+ vmxnet3_command ( vmxnet, VMXNET3_CMD_QUIESCE_DEV );
+ vmxnet3_command ( vmxnet, VMXNET3_CMD_RESET_DEV );
+ err_activate:
+ vmxnet3_flush_tx ( netdev );
+ vmxnet3_flush_rx ( netdev );
+ free_dma ( vmxnet->dma, sizeof ( *vmxnet->dma ) );
+ err_alloc_dma:
+ return rc;
+}
+
+/**
+ * Close NIC
+ *
+ * @v netdev Network device
+ */
+static void vmxnet3_close ( struct net_device *netdev ) {
+ struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
+
+ vmxnet3_command ( vmxnet, VMXNET3_CMD_QUIESCE_DEV );
+ vmxnet3_command ( vmxnet, VMXNET3_CMD_RESET_DEV );
+ vmxnet3_flush_tx ( netdev );
+ vmxnet3_flush_rx ( netdev );
+ free_dma ( vmxnet->dma, sizeof ( *vmxnet->dma ) );
+}
+
+/** vmxnet3 net device operations */
+static struct net_device_operations vmxnet3_operations = {
+ .open = vmxnet3_open,
+ .close = vmxnet3_close,
+ .transmit = vmxnet3_transmit,
+ .poll = vmxnet3_poll,
+ .irq = vmxnet3_irq,
+};
+
+/**
+ * Check version
+ *
+ * @v vmxnet vmxnet3 NIC
+ * @ret rc Return status code
+ */
+static int vmxnet3_check_version ( struct vmxnet3_nic *vmxnet ) {
+ uint32_t version;
+ uint32_t upt_version;
+
+ /* Read version */
+ version = readl ( vmxnet->vd + VMXNET3_VD_VRRS );
+ upt_version = readl ( vmxnet->vd + VMXNET3_VD_UVRS );
+ DBGC ( vmxnet, "VMXNET3 %p is version %d (UPT version %d)\n",
+ vmxnet, version, upt_version );
+
+ /* Inform NIC of driver version */
+ writel ( VMXNET3_VERSION_SELECT, ( vmxnet->vd + VMXNET3_VD_VRRS ) );
+ writel ( VMXNET3_UPT_VERSION_SELECT, ( vmxnet->vd + VMXNET3_VD_UVRS ) );
+
+ return 0;
+}
+
+/**
+ * Get permanent MAC address
+ *
+ * @v vmxnet vmxnet3 NIC
+ * @v hw_addr Hardware address to fill in
+ */
+static void vmxnet3_get_hw_addr ( struct vmxnet3_nic *vmxnet, void *hw_addr ) {
+ struct {
+ uint32_t low;
+ uint32_t high;
+ } __attribute__ (( packed )) mac;
+
+ mac.low = le32_to_cpu ( vmxnet3_command ( vmxnet,
+ VMXNET3_CMD_GET_PERM_MAC_LO ) );
+ mac.high = le32_to_cpu ( vmxnet3_command ( vmxnet,
+ VMXNET3_CMD_GET_PERM_MAC_HI ) );
+ memcpy ( hw_addr, &mac, ETH_ALEN );
+}
+
+/**
+ * Probe PCI device
+ *
+ * @v pci PCI device
+ * @v id PCI ID
+ * @ret rc Return status code
+ */
+static int vmxnet3_probe ( struct pci_device *pci ) {
+ struct net_device *netdev;
+ struct vmxnet3_nic *vmxnet;
+ int rc;
+
+ /* Allocate network device */
+ netdev = alloc_etherdev ( sizeof ( *vmxnet ) );
+ if ( ! netdev ) {
+ rc = -ENOMEM;
+ goto err_alloc_etherdev;
+ }
+ netdev_init ( netdev, &vmxnet3_operations );
+ vmxnet = netdev_priv ( netdev );
+ pci_set_drvdata ( pci, netdev );
+ netdev->dev = &pci->dev;
+ memset ( vmxnet, 0, sizeof ( *vmxnet ) );
+
+ /* Fix up PCI device */
+ adjust_pci_device ( pci );
+
+ /* Map PCI BARs */
+ vmxnet->pt = ioremap ( pci_bar_start ( pci, VMXNET3_PT_BAR ),
+ VMXNET3_PT_LEN );
+ if ( ! vmxnet->pt ) {
+ rc = -ENODEV;
+ goto err_ioremap_pt;
+ }
+ vmxnet->vd = ioremap ( pci_bar_start ( pci, VMXNET3_VD_BAR ),
+ VMXNET3_VD_LEN );
+ if ( ! vmxnet->vd ) {
+ rc = -ENODEV;
+ goto err_ioremap_vd;
+ }
+
+ /* Version check */
+ if ( ( rc = vmxnet3_check_version ( vmxnet ) ) != 0 )
+ goto err_check_version;
+
+ /* Reset device */
+ if ( ( rc = vmxnet3_command ( vmxnet, VMXNET3_CMD_RESET_DEV ) ) != 0 )
+ goto err_reset;
+
+ /* Read initial MAC address */
+ vmxnet3_get_hw_addr ( vmxnet, &netdev->hw_addr );
+
+ /* Register network device */
+ if ( ( rc = register_netdev ( netdev ) ) != 0 ) {
+ DBGC ( vmxnet, "VMXNET3 %p could not register net device: "
+ "%s\n", vmxnet, strerror ( rc ) );
+ goto err_register_netdev;
+ }
+
+ /* Get initial link state */
+ vmxnet3_check_link ( netdev );
+
+ return 0;
+
+ unregister_netdev ( netdev );
+ err_register_netdev:
+ err_reset:
+ err_check_version:
+ iounmap ( vmxnet->vd );
+ err_ioremap_vd:
+ iounmap ( vmxnet->pt );
+ err_ioremap_pt:
+ netdev_nullify ( netdev );
+ netdev_put ( netdev );
+ err_alloc_etherdev:
+ return rc;
+}
+
+/**
+ * Remove PCI device
+ *
+ * @v pci PCI device
+ */
+static void vmxnet3_remove ( struct pci_device *pci ) {
+ struct net_device *netdev = pci_get_drvdata ( pci );
+ struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
+
+ unregister_netdev ( netdev );
+ iounmap ( vmxnet->vd );
+ iounmap ( vmxnet->pt );
+ netdev_nullify ( netdev );
+ netdev_put ( netdev );
+}
+
+/** vmxnet3 PCI IDs */
+static struct pci_device_id vmxnet3_nics[] = {
+ PCI_ROM ( 0x15ad, 0x07b0, "vmxnet3", "vmxnet3 virtual NIC", 0 ),
+};
+
+/** vmxnet3 PCI driver */
+struct pci_driver vmxnet3_driver __pci_driver = {
+ .ids = vmxnet3_nics,
+ .id_count = ( sizeof ( vmxnet3_nics ) / sizeof ( vmxnet3_nics[0] ) ),
+ .probe = vmxnet3_probe,
+ .remove = vmxnet3_remove,
+};
Code Review / kvmfornfv.git / blobdiff